Git Updates and Enhancements

-------------------- (subsystems) * various gitk updates including use of themed widgets under Tk 8.5, Japanese translation, a fix to a bug when running "gui blame" from a subdirectory, etc. * various git-gui updates including new translations, wm states fixes, Tk bug workaround after quitting, improved heuristics to trigger gc, etc. * various git-svn updates. * "git fetch" over http learned a new mode that is different from the traditional "dumb commit walker". (portability) * imap-send can be built on mingw port. (performance) * "git diff -B" has smaller memory footprint. (usability, bells and whistles) * The object replace mechanism can be bypassed with --no-replace-objects global option given to the "git" program. * In configuration files, a few variables that name paths can begin with ~/ and ~username/ and they are expanded as expected. * "git subcmd -h" now shows short usage help for many more subcommands. * "git bisect reset" can reset to an arbitrary commit. * "git checkout frotz" when there is no local branch "frotz" but there is only one remote tracking branch "frotz" is taken as a request to start the named branch at the corresponding remote tracking branch. * "git commit -c/-C/--amend" can be told with a new "--reset-author" option to ignore authorship information in the commit it is taking the message from. * "git describe" can be told to add "-dirty" suffix with "--dirty" option. * "git diff" learned --submodule option to show a list of one-line logs instead of differences between the commit object names. * "git diff" learned to honor diff.color.func configuration to paint function name hint printed on the hunk header "@@ -j,k +l,m @@" line in the specified color. * "git fetch" learned --all and --multiple options, to run fetch from many repositories, and --prune option to remove remote tracking branches that went stale. These make "git remote update" and "git remote prune" less necessary (there is no plan to remove "remote update" nor "remote prune", though). * "git fsck" by default

This section highlights various updates and improvements to Git, including subsystem updates to gitk, git-gui, and git-svn, as well as enhancements to portability, performance, and usability. New features and options have been added to several Git commands, such as 'git fetch', 'git diff', 'git commit', and 'git describe', to improve functionality and user experience.